package com.ibeetl.code.ch05;

import java.util.Random;

/**
 * 非性能相关，验证随机式不随机
 *
 * @author 公众号 java系统优化
 */
public class Other {
    public void test() {
        String name1 = "hi";
        String name2 = "world";
        info("hello {},{}", name1, name2);
    }

    public void info(String format, Object... args) {

    }

    public static void main(String[] args) {
        bit();
    }

    public static void bit() {
        int a = 111;
        System.out.println((a & 1) == 1);

        System.out.println(a >> 1);
        System.out.println(a << 1);
    }

    public static void random() {
        int seed = 100;
        int range = 50;
        Random random = new Random(System.currentTimeMillis());
        int a1 = random.nextInt(range);
        int a2 = random.nextInt(range);
        random = new Random(seed);
        int b1 = random.nextInt(range);
        int b2 = random.nextInt(range);
        random = new Random(seed);
        int c1 = random.nextInt(range);
        int c2 = random.nextInt(range);
        System.out.println("a " + a1 + "," + a2);
        System.out.println("b " + b1 + "," + b2);
        System.out.println("c " + c1 + "," + c2);
    }
}
